package com.lmf.config;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringContextUtil implements ApplicationContextAware {
    //上下文实例
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext=applicationContext;
    }
    /**
     * 获取applicationContext
     */
    public static ApplicationContext getApplicationContext(){
        return applicationContext;
    }
    /**
     * 通过name获取Bean对象
     */
    public static Object getBean(String name){
        return getApplicationContext().getBean(name);
    }
    /**
     * 通过class返回指定的bean
     */
    public static <T> T getBean(Class<T> Class){
        return getApplicationContext().getBean(Class);
    }
    /**
     * 通过name和class返回指定的bean
     */
    public static  <T> T getBean(String name,Class<T> Class){
       return getApplicationContext().getBean(name,Class);
    }
}
